French Pluperfect
The plus-que-parfait is the past perfect tense of the indicative mood. It expresses an action that occurred before another action in the past: it could be called ''the past of the past."
The English past perfect is formed with ''had'' + past participle, while in French it's avoir or être in the imparfait + past participle.
For example
See also: French Passé and All French tenses